Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
0000196heavily pollutedgood401excellent
2300180heavily pollutedgood401excellent
2200170heavily pollutedgood381excellent
2100189heavily pollutedgood381excellent
2000184heavily pollutedgood381excellent
1900181heavily pollutedgood361excellent
1800168heavily pollutedgood371excellent
1700157heavily pollutedgood361excellent
1600148heavily pollutedgood361excellent
1500164heavily pollutedgood381excellent
1400156heavily pollutedgood381excellent
1300149heavily pollutedgood381excellent
1200153heavily pollutedgood381excellent
1100135moderately pollutedgood391excellent
1000169heavily pollutedgood401excellent
0900172heavily pollutedgood381excellent
0800154heavily pollutedgood361excellent
0700136moderately pollutedgood341excellent
0600136moderately pollutedgood321excellent
0500154heavily pollutedgood301excellent
0400160heavily pollutedgood311excellent
0300163heavily pollutedgood311excellent
0200113moderately pollutedgood401excellent
0100244severely pollutedgood501excellent